| Trail Name | Distance Miles | Elevation Gain | Difficulty |
| Aliso Creek Trail | 4 | 600 | Easy |
| Arroyo Trabuco Regional Park | 3 | < 100 | Easy |
| Bear Canyon | 6.8 | 1,000 | Moderate |
| Bedford Peak | 7 | 1,900 | Moderate - Strenuous |
| Black Star Canyon Falls | 6.7 | 800 | Moderate - Strenuous |
| Carbon Canyon Regional Park | 2.6 | < 50 | Easy |
| Caspers Wilderness Park (Bell Canyon Trail) | 4 | 200 | Easy |
| Caspers Wilderness Park (Bell Canyon Trail/East Ridge Loop) | 5 | 300 | Easy - Moderate |
| Caspers Wilderness Park (San Juan Hot Springs) | 15 | 1,200 | Strenuous |
| Chino Hills State Park (Telegraph Canyon) | 8.2 | 700 | Moderate |
| Chaquito Falls | 8.9 | 1,300 | Moderate |
| Eagle Loop | 3.5 | 480 | Easy - Moderate |
| El Cariso Nature Trail | 1.2 | < 100 | Easy |
| Elsinore Peak | 1 | 250 | Easy |
| Flag Hill | 3.5 | 400 | Easy |
| Holy Jim Falls | 2.8 | 650 | Easy |
| Irvine Regional Park | 2.5 | 100 | Easy |
| Ladera Ranch Ridge | 4.9 | 200 | Easy - Moderate |
| Laurel Springs | 9.5 | 2,250 | Moderate |
| Limestone Canyon Wilderness (Shoestring/West Loma/Haul Road Loop) | 4.5 | 450 | Easy - Moderate |
| Limestone Canyon Wilderness (Viewing the Sinks) | 5.5 | 800 | Easy - Moderate |
| Los Pinos Peak via the Los Pinos Trail | 16.4 | 3,300 | Strenuous |
| Los Pinos Peak via the Main Divid Road | 5.2 | 1,000 | Moderate |
| Mile Square Regional Park | 3 | < 100 | Easy |
| Mission Viejo Open Space | 2.3 | 200 | Easy |
| Morgan Trail | 8.6 | 500 | Moderate |
| O'Neill Regional Park (Live Oak Trail) | 3.2 | 700 | Easy - Moderate |
| Oak Canyon Nature Center | 2 | 200 | Easy |
| Ortega Falls | 0.5 | 300 | Easy |
| Oso Creek Trail | 5.5 | < 100 | Easy - Moderate |
| Peters Canyon Regional Park | 4.5 | 500 | Easy - Moderate |
| Riley Wilderness Park | 3.5 | 300 | Easy |
| Saddleback Mountain | 16 | 4,000 | Strenuous |
| San Juan Loop Trail | 2.2 | 350 | Easy |
| Santa Rosa Plateau | 6.3 | 400 | Moderate |
| Santiago Oaks Regional Park | 4 | 700 | Easy - Moderate |
| Sitton Peak | 10.3 | 2,200 | Moderate |
| Tenaja Falls | 1.4 | 300 | Easy |
| Tenaja Trailhead to Fisherman's Camp | 7 | 900 | Moderate |
| Whiting Ranch Wilderness Park (Borrego Trailhead to Billy Goat Trail Loop) | 5.3 | 650 | Moderate |
| Whiting Ranch Wilderness Park (Borrego Trailhead to Red Rock Canyon) | 4.4 | 500 | Easy - Moderate |
| Whiting Ranch Wilderness Park (Borrego Trailhead to Vista Outlook) | 5.5 | 700 | Moderate |
| Whiting Ranch Wilderness Park (Glenn Ranch Road Trailhead) | 5 | 500 | Easy |
| Whiting Ranch Wilderness Park (Portola Parkway Trailhead) | 3.2 | 500 | Easy |
| Wilderness Glen | 4 | 300 | Easy |